Hello,
Please post different questions via separate topics, next time.
1/ Add the next code in Theme Options > Theme custom CSS:
p a {
color: red;
}
p a:hover {
color: black;
}
change colors depends on your needs
2/
.single-product .woocommerce-main-image {
pointer-events: none;
}
3/ Provide temporary wp-admin and FTP access, then I will pass your question to our dev team.
4/ Could you provide a screenshot?
Regards